Industry News | 2018-12-08 03:29:29.0
SMT Dictionary – Surface Mount Technology Acronym and Abbreviation
Electronics Forum | Tue May 02 05:59:28 EDT 2006 | davef
We agree with Ken's points about off contact / screen versus stencil, but this DHolt is talking stencil [regardless of what is typed about screens]. Comments are: * On "smears under the stencil": smearing happens. It makes us wonder about the frequ
Electronics Forum | Fri Dec 10 12:06:35 EST 1999 | Gary Kemp
Tracy, I would check the squeegee blade for wear at the edges. Also, check the squeegee pressure to ensure it is not to high, forcing the paste between the stencil and the land, causing a smear. Good luck.
Electronics Forum | Thu Apr 06 02:23:50 EDT 2000 | Marcus
What about your printer and your stencil ? Do you have a problem with misalignment between pcb and stencil ? How often do you clean your stencil during production ? Maybe you have smearing under the stencil because there is a snapoff between stencil
Electronics Forum | Mon May 01 14:30:14 EDT 2006 | marvindamaniac
I know from previous experiences that off contact printing have helped us reduce bridges and smears under the stencil. I am looking for ANY documentation regarding this topic in order to try to implement a change at our current factory. If anyone ha
Electronics Forum | Tue Mar 22 11:48:33 EDT 2011 | cyber_wolf
Make sure the paper is advancing correctly on your stencil wiper. I have seen this cause major issues. If the paper hangs up, it will smear paste across the bottom of the stencil every time it wipes.
Electronics Forum | Tue Mar 22 11:57:07 EDT 2011 | jercole
Make sure the paper is advancing correctly on > your stencil wiper. I have seen this cause major > issues. If the paper hangs up, it will smear > paste across the bottom of the stencil every time > it wipes. We are manually cleaning the stenci
Electronics Forum | Fri Sep 30 10:37:35 EDT 2016 | ttheis
We sometimes have a misprint and we would never re-print on a board with paste on it already because it will surely get paste all over the bottom of your stencil and could smear between traces. If we do mispront we have to clean the paste off the boa
Electronics Forum | Thu Sep 29 18:57:14 EDT 2016 | vchauhan
Is it ok to re-print the mis-print PCB? Personally I am oppose to re-print the mis-print board. For two reasons. 1. You will end up adding solder paste on the bottom side of the stencil. 2. You may smear solder paste in some area. But I would like to
Electronics Forum | Thu Oct 23 09:45:05 EDT 2014 | rgduval
Generally, excess solder balls found randomly around the board/parts points to either a dirty stencil during printing, or a stencil/board that is shifting during printing (smearing the paste a little, and causing a dirty stencil. If the apertures ar
